Abstract

1. Abstract Volatile organic compound (VOC) based fire risk assessment systems for wood land fires can shorten the time between the outbreak of a fire and the arrival of fire crews. This can prevent the development of crown fires, which are harder to control than ground fires. Metal-oxide semiconductor gas sensors derive of good technical properties for VOC detection. In this study, the VOC emissions of heated lignocellulose biomass (Eucalyptus globulus) were analyzed by GC-MS. Eucalyptol and furfural showed the highest emission rates. All of the 20 identified VOCs were tested on the antenna of the fire beetle Merimna atrata and eucalyptol and furfural both were among the 13 VOCs that were significantly electrophysiological active on the antenna of the beetle. Three semi-conductor metal oxide gas sensors allowed a monitoring of the temperature dependent VOC pattern. The feasibility of such gas sensors for early fire detection is discussed. 2. Keywords: <span style=mso-bidi-font-size: 10.0pt;font-family: times= new= roman,serif;mso-ansi-language:en-us=> Electrophysiology; Eucalyptol; Fire risk assessment; Furfural; Insect olfaction; Merimna atrata; Semi-conductor metal oxide gas sensors; VOC; 2-methoxyphenol α-pinene

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